[TechAssist] Re: Mitsubishi CS-2720R low brightness, sides pulled in, C960, C957bad

  • From: "William Rayburn" <premtech@xxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sat, 29 May 2004 08:41:04 -0700

Phil,
Sure!!  You'll simply be running 135v instead of 130 on your B+ which shouldn't 
harm
anything for a quick verification.  I wouldn't run it a long time, but for test 
purposes it
should work just fine.  The STRD3030 also subs to an NTE1777 and the STR30130 
will work as a
permanent sub.
Bill

William H. Rayburn, CET
NESDA Member
Premium Technologies
PO Box 442
Long Beach, Wa. 98631
(360) 642-4993
----- Original Message ----- 
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, May 29, 2004 8:15 AM
Subject: [TechAssist] Re: Mitsubishi CS-2720R low brightness, sides pulled in, 
C960, C957bad


I happen to have some STRD3035 ICs in stock (same package). Would these
do as a temporary test for troubleshooting?
In past diagnostics, I've subbed STR30135 for 30130's, etc. It was off
by 5 volts and did no harm, but verified if the device was bad or not.
Phil Bader

William Rayburn wrote:

>Phil,
>If C960 was bad and didn't correct the problem also replace the regulator 
>IC951, Strd3030,
>which is most likely leaking and check R954 for open or changed in value, 
>(120ohm/30w).
>It's between IC951 and C957.
>If that corrects the sides from pulling in but not the brightness check D210 
>off pin 8 of
>the FB for shorted.
>Hope this helps
>Bill
>
>William H. Rayburn, CET
>NESDA Member
>Premium Technologies
>PO Box 442
>Long Beach, Wa. 98631
>(360) 642-4993
>----- Original Message ----- 
>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Saturday, May 29, 2004 6:20 AM
>Subject: [TechAssist] Re: Mitsubishi CS-2720R low brightness, sides pulled in, 
>C960,
C957bad
>
>
>Thanks, but C460 is a 100mfd@35volts in the Vertical, and is fine. This
>seems to be a horiz. deflection or PS issue. I was also told to check
>C516 (no value given)but I can't locate that.
>Thanks anyway.
>Phil Bader
>
>Eric Manuel wrote:
>
>
>
>>Hi Phil check this tip  Eric
>>
>>              Horizontal def                 INSUFFICANT, PIX MAY
>>                               ROLL
>>                                                     C460 10/160,
>>STRD3030
>>                                                     (MAY USE STR30130
>>WITH
>>    Eric Manuel
>>   Deer Lake Nfld
>>INSULATOR)
>>
>>Phil Bader wrote:
>>
>>
>>
>>
>>>The picture is low brightness with the horiz width pulled in several
>>>inches both sides. In the PS I found two bulged lytics:
>>>C960 (10mfd/160V)
>>>C957 (47mfd/200V)
>>>Replaced both no change.
>>>Nothing in archives I see.
>>>Phil Bader
>>>
>>>--
>>>
>>>Philip Bader
>>>Jan Phyl TV Inc. (estab. 1976)
>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>Fax (863) 299-8821
>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>
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>
>
>

-- 

Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx



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